Determining If VSS Can Snapshot a File

When running a File and Folder backup, you may receive errors saying "the file could not be included in the snapshot..." Some files are prevented from being snapshot by Microsoft's Volume Shadow Copy Service (VSS) by Windows. These files include system files and types of program files. To determine whether or not a file you are receiving errors for is one of those that is ineligible, try the following procedure.

The lowermost directory, in this case ‘shadowX’ cannot already exist, as Windows will create this directory as a symbolic link to the shadow copy. Also, ensure the path to the shadow copy itself has a trailing backslash or this process will fail.

Navigate to the symbolic link you have created, in the example above "C:\VSS\shadow17\".

Determine whether the file you are looking for is inside this shadow copy.

If the file is not present, Windows cannot snapshot the file using VSS and the Intronis software may not be able to back up the file if snapshot mode is enabled. Snapshot mode is enabled by default on all File and Folder backup sets.